SuppressEmpty is about empty elements -- no content, no attributes, like
<set></set>.
XML::Simple is good when you want quickly turn an XML file into a data structure and you are accept that it is up to
XML::Simple what structure it will be, except maybe some minor tweaks. If you have some specific requirements about the data structure,
XML::Simple probably not what you want. Have a look on
Stepping up from XML::Simple to XML::LibXML.